Please use this identifier to cite or link to this item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1179435
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dc.contributor.authorSANTOS, K. R. G. dos
dc.contributor.authorMARÇAL, K. L. G.
dc.contributor.authorNASCIMENTO, T. L. dos
dc.contributor.authorMELO, N. F. de
dc.date.accessioned2025-10-06T18:48:38Z-
dc.date.available2025-10-06T18:48:38Z-
dc.date.created2025-10-06
dc.date.issued2025
dc.identifier.citationAnais da Academia Brasileira de Ciências, v. 97, n. 4, 2025.
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1179435-
dc.descriptionPassiflora is the most diverse genus of the Passifloraceae family, and holds great economic importance. However, cytogenetic information is still limited for most species. This study aimed to analyze the karyotypes of nine Passiflora species, to determine the chromosome number and the distribution of heterochromatic regions by double staining with CMA/DAPI and by fluorescence in situ hybridization (FISH) with 35S and 5S rDNA probes. Eight species presented a karyotype with 2n=18 chromosomes, and in contrast, P. foetida was the only species to exhibit a karyotype with 2n=20. Double staining with CMA and DAPI revealed distinct staining patterns, with four CMA+ blocks located in the terminal regions of the chromosomes of eight species, except in P. foetida, where six CMA+ blocks were observed in the proximal regions. FISH identified four to six 35S rDNA sites in the terminal regions of the chromosomes in P. alata and P. edmundoi, and six sites in interstitial region in P. foetida. In these same species, two 5S rDNA sites were observed, and in P. foetida four sites in the subterminal regions. The observed chromosomal variations suggest significant genetic diversity in the genus, valuable data for studies of diversity, conservation and genetic improvement. Key words: karyotype, CMA, DAPI, FISH, passion fruit.
dc.language.isoeng
dc.rightsopenAccess
dc.subjectCMA
dc.subjectDAPI
dc.titleComparative analysis of structuralchromosome variability and heterochromatin localization in Passiflora L. (Passifloraceae).
dc.typeArtigo de periódico
dc.subject.thesagroMaracujá
dc.subject.thesagroMelhoramento Genético Vegetal
dc.subject.thesagroCariótipo
dc.subject.nalthesaurusPassiflora
dc.subject.nalthesaurusPassion fruits
riaa.ainfo.id1179435
riaa.ainfo.lastupdate2025-10-06
dc.identifier.doihttps://doi.org/10.1590/0001-3765202520250272
dc.contributor.institutionKEDMA RAISSA G. DOS SANTOS, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; KANANDA LAIRA G. MARÇAL, UNIVERSIDADE ESTADUAL DE FEIRA DE SANTANA; TIAGO L. DO NASCIMENTO, FUNDAÇÃO DE AMPARO À CIÊNCIA E TECNOLOGIA DE PERNAMBUCO; NATONIEL FRANKLIN DE MELO, CPATSA.
Appears in Collections:Artigo em periódico indexado (CPATSA)

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